package/perf: if audit is enabled, depend on it

Enables the `perf trace` command.

Signed-off-by: Václav Kubernát <sir.venceslas@gmail.com>
Reviewed-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/linux-tools/linux-tool-perf.mk.in

@@ -21,7 +21,6 @@ PERF_MAKE_FLAGS = \
 	DESTDIR=$(TARGET_DIR) \
 	prefix=/usr \
 	WERROR=0 \
-	NO_LIBAUDIT=1 \
 	NO_GTK2=1 \
 	NO_LIBPERL=1 \
 	NO_LIBPYTHON=1 \
@@ -64,6 +63,12 @@ else
 PERF_MAKE_FLAGS += NO_NEWT=1 NO_SLANG=1
 endif
 
+ifeq ($(BR2_PACKAGE_AUDIT),y)
+PERF_DEPENDENCIES += audit
+else
+PERF_MAKE_FLAGS += NO_LIBAUDIT=1
+endif
+
 ifeq ($(BR2_PACKAGE_LIBUNWIND),y)
 PERF_DEPENDENCIES += libunwind
 else